Critical roles of RasGRP1 for invariant NKT cell development.
Critical roles of RasGRP1 for invariant NKT cell development.
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DOI:
10.4049/jimmunol.1003798
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发表时间:
2011-11-01
期刊:
影响因子:
--
通讯作者:
Zhong XP
中科院分区:
文献类型:
--
作者:
Shen S;Chen Y;Gorentla BK;Lu J;Stone JC;Zhong XP
The invariant NKT (iNKT) cell lineage contains CD4+ and CD4- subsets. The mechanisms that control such subset differentiation and iNKT cell maturation in general have not been fully understood. RasGRP1, a guanine nucleotide exchange factor for T cell receptor-induced activation of the Ras-Erk1/2 pathway, is critical for conventional αβ T cell development but dispensable for generating regulatory T cells. Its role in iNKT cells has been unknown. Here we report severe decreases of iNKT cells in RasGRP1-/- mice through cell intrinsic mechanisms. In the remaining iNKT cells in RasGRP1-/- mice, there is a selective absence of the CD4+ subset. Furthermore, RasGRP1-/- iNKT cells are defective in T cell receptor induced proliferation in vitro. These observations establish that RasGRP1 is not only important for early iNKT cell development, but also for the generation/maintenance of the CD4+ iNKT cells. Our data provides genetic evidence that the CD4+ and CD4- iNKT cells are distinct sub-lineages with differential signaling requirements for their development.
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影响因子:
30.5
作者:
通讯作者:
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影响因子:
32.4
作者:
Mendiratta, SK;Martin, WD;VanKaer, L
通讯作者:
VanKaer, L
影响因子:
30.5
作者:
D'Cruz, Louise M.;Knell, Jamie;Goldrath, Ananda W.
通讯作者:
Goldrath, Ananda W.
DOI:
10.1084/jem.20050456
发表时间:
2005-08-15
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
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通讯作者:
Bendelac A
影响因子:
30.5
作者:
通讯作者:
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